Atomizing apparatus and the like



K J. G. MGKEN ET AL ATMIZING APPARATUS Ann THE LIKE l Aug.' A 24 1926.

Original Filed March 5. 1921 llllllll Patented Aug. 24, v1926.

UNITED STATES PATENT OFFICE.

JOHN GRAVES MCKEAN, OF MOUNT VERNON, AND ROBERT FREDERICK JONES, OF

l GLASGOW', SCOTLAND.

fA'J.O1V[IZIN(`;r APPARATUS AND THE LIKE.

Original application filed March 5, 1921, Serial No. 449,813, and. in Great Britain April 9, 1920. Divided and this application filed November 11, 1922i' Serial No. 600,466.

This application for a patent is a divisional application from our co-pending application Serial No.` 149,813 filed 5th March, 1921.

This invention has reference to improvements in atomizers for liquid fuel and other liquids of the type in which a diaphragm or disc member is provided with a conical projection and with angled emission holes so arranged that the liquid to be atomized,

passing through the holes, is directed tangentially on to the surface of the cone into the space or swirling chamber arranged between the said surface of the cone and the surface of a recess formed in a nozzle member fitted to the face of the disc member and housing the cone.

According to this invention the diaphragm or disc member is formed with a flange or wall which surrounds the conical projection;

the dimensions of the cone and of the wall being such that ythe apex of the cone does not project beyond the edge of the wall. The nozzle member having the recess, which houses the cone and forms the swirling chamber, is fitted within this surrounding wall or flange. The emission holes, which are formed through the disc from the rear to the front face of same, lie at a tangent to the base of the cone and are also tangent to the surface of the cone. The exit ends of these holes are located between the surrounding wall and the base of the cone.

Preferably the circles which form the said exit ends are tangents to the circle which forms the said base of the cone.

When it is desired to atomize the maximum quantity of liquid the diameter of the base of the conical recess in the nozzle is such that the exit ends of the holes are uncovered, when the nozzle is fitted within the surrounding wall; that is, the circle which forms the base of the recess would enclose the circles which form the exit ends of the holes so that the distance between the surface of the recess and the surface of the cone would equal, approximately, the diameter of the holes.

The nozzle may be formed in o-ne with a retaining nut or cap screwing on to the atomizer body or if desired the nozzle may be formed separate from said nut but held in place by same.

In order that others skilled in the art to which this invention relates `may properly understand the same we have hereunto appended one sheet of explanatory drawings in which:- j

Figure 1 is a sectional elevation, taken on the line 1 1 of Figure 2, of a liquid spraying device constructed according .to this invent-ion.

Figure 2 is a transverse sectional elevation taken on the line 2 2 of Figure 1.

Figure 3 is a view similar to Figure 1, but illustrates a slightly modified construction.

Referring to these drawings In carrying this invention into effect or practice a represents the atomizer body provided with a liquid fuel supply passage b. c (Figure 1) represents a combined retaining nut and nozzle provided with a conical recess d terminating in an out-let to the furnace. Y

The nozzle may be separated from the retaining nut as illustrated by Figure 3. e represents a diaphragm registering with the atomizer body a and having its rear face exposed to the liquid fuel supply passage l).

The diaphragm e is recessed in its front face, this said recess forming a register for the nozzle. A conical projection f extends from the bottom of the recess. The apex of the cone does not project beyond the front face of the diaphragm, that is, a wall or second projection 71, surrounds and houses the cone f. g represents ports or passages leading from the rear face of the diaphragm to the recess in the said diaphragm. These ports or passages have the same projected angle as the conical projection y and are tangential to the base of same.

The liquid fuel 'under pressure passes along the passage Z9 0f the atomizer body a and entering the ports of passages g is projected therefrom with a spiral motion into theA whirling chamber and finally through the outlet from the conical recess d into the furnace.

We claim 1. An atomizer for liquid fuel comprising a tubular atomizer body; a diaphragm disposed adjacent thereto and formed with a recess in the outer face thereof; a conical projection integral with said diaphragm and located within said recess; a nozzle member having a cylindrical central rear portion fitted within said recess; a conical recess 1n said nozzle member co-actlng with said conical projection to form a swirling chamber between the surfaces of said conical recess and conical projection; and passages adapted to conduct liquid fuel rom said tubular atomizer body into said swirling chamber.

2. An atomizer for liquid fuel comprising a tubular atomizer body; a diaphragm positioned in proximity thereto and formed with a recess in the outer face of said diaphragm; a conical projection integral with said diaphragm and located wholly within said recess; a nozzle member having a cylindrical central rear portion fitted within said 'recessg a conical recess in said nozzle member co-acting with said conical projection to form a swirling chamber between the surfaces of said conical recess and conical projection; and holes formed through said diaphragm, inclined tangentially to the base of said conical projection and also tangent to the surface of said conical projection.

3. In adevice of the class described, a diaphragm having a conical projection and a second projection surrounding said conical projection, said diaphragm being also provided with fuelv passages; and a nozzle member fitting within said second projection and provided with a conical recess terminating in an outlet passage, said recess 1o-acting with said conical projectionio form a swirl chamber in communication with said fuel passage.

JOHN GRAVES MCKEAN.l ROBERT FREDERICK JONES. 

